Device for measuring pre-stressing force in a bolt-nut connection
AssigneeBjorn Burmann
InventorBjorn Burmann
Life of this patent
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Abstract
A device for measuring pre-stressing force in a bolt/nut connection, comprising a screw nut that is provided with a sensor means for sensing the pre-stressing force. The nut (1) is of standard design, and the nut itself constitutes a sensor body in that, in the outer peripheral surface (2) of the nut, there is machined at least one recess (3) in which there is placed a sensor (4) that is adapted for sensing mechanical stress in the nut, and for providing a signal representing the stress, for transmission to an external recording device.
Claims9
A device for measuring pre-stressing force in a bolt/nut connection, comprising a screw nut that is provided with a sensor means for sensing the pre-stressing force, characterised in that the nut (1) is of standard design and that the nut itself constitutes a sensor body in that, in the outer peripheral surface (2) of the nut, at the chosen distance from the abutting surface of the nut (1) against the support (5), there is machined at least one recess (3) in which there is placed a sensor (4) that is adapted for sensing mechanical stress in the nut, and for providing a signal representing the stress, for transmission to an external recording device.
Dependencies are inferred from the claim text.